So last month I was at a job interview and they asked me what I was into, I said music. They asked, "Well what's your favorite band?" The Byrds. "Sing me one of their songs." I sang the chorus of Mr. Tambourine Man and Turn Turn Turn. They were impressed; I got the job.
@NathelieJulienn Well, it's a little late, but just in case you've been in cryogenic sleep since February 23 or have resisted listening to the Byrds til your question gets answered, their most Psychedelic albums are Eight Miles High, Younger Than Yesterday and The Notorious Byrd Brothers. The ones before those are the Folk Rock/Pop albums that popularized that jangly 12-string guitar sound and the ones after are almost uniformly Country/Country Rock. However, Dr. Byrds & Mr. Hyde, which I think is incredibly underrated and underexposed, mixes Country Rock and Psychedelic Rock into one record.
The essential stuff stretches past the first four, I'd say. The Notorious Byrd Brothers is possibly their best work, then there's the country-rock masterpiece Sweetheart of the Rodeo and its perhaps even better sequel Dr. Byrds & Mr. Hyde. After that they became hit and miss, but the first seven are absolutely essential, some of the best music of the 60s. I don't want to get into a silly debate about which band is "best" or "most influential" because that type of thing usually devolves pretty quickly into argument but I personally rate the Byrds more highly than I do the Beatles. The Beatles were masters of catchy melodies in a pop framework, but the Byrds were expanding the boundaries of what could be done with and considered rock music, all while putting together some heavenly melodies themselves.
havent shouted much here but I have, over the past year or so, recognized the Byrds as one of the most important bands of all time in terms of pushing boundaries, advancing guitar music, and lasting influence. Their first 4 albums are essential to anyone, imo. Pass up the compilations and get those albums, preferably the reissues that include b-sides and singles.